"Gesture input" refers to a way of controlling something, like a computer or a device, using hand movements or gestures instead of using traditional buttons or touchscreens. Full definition
It can recognize handwritten letters and numbers as well as gesture inputs. (digitaltrends.com)
Annual updates are limited to new options and equipment, including the Subaru Starlink Multimedia System, whose 6.2 - inch touch screen enables smartphone - like gesture input. (topspeed.com)
With gesture inputs on this device you can do things like Turn over to reject call, silence the phone when you pick up call, Direct call & answer, shake to change the next song. (phoneradar.com)